Vise



Dec, 30, 1969 F; K. STEIN 3,486,746

VISE Filed March 14, 1967 I I? 2 FIG. 3

- 6 INVENTOR E KENNETH STE/N I316 .l8 :3 Attorney A United States Patent US. Cl. 269-251 2 Claims ABSTRACT OF THE DISCLOSURE A vise having a movable jaw slidable on a base portion and having a generally cylindrical gib. The gib is slidabe with a cose working fit in a through-bore provided in the base portion and open to the top surface of the base portion between a fixed jaw at one end of the base portion and a fixed bearing for the movable jaw operating screw at the other end. The gib is secured by screws extending through the gib to the bottom of the movable jaw, the screws being accessible one at a time through a vertical hole in the base portion. The jaw operating screw has a swivel connection with the movable jaw comprising a cylindrical head swivelled in the small end of a keyhoe slot in the jaw.

This invention relates to machinists vises and is more particularly concerned with a vise having a frame of onepiece heavy metal construction with a fixed jaw at one end and a bearing for the vise screw at the other end, great strength and rigidity being attributable to the fact that the base in not weakened by the usual wide T-slot for guiding the dove-tail usually provided at the bottom of the movable jaw, the present vise having only a through-bore on the longitudinal center line of the frame, so located that a small portion of the top of the bore is open as a slot to the top surface of the base between the jaw and the bearing so that a gib of elongated cylindrical form slidable with a close working fit in the through-bore and having a flat top surface for fastening the same to the bottom of the movable jaw serves to hold the jaw firmly against the base with just enough clearance for easy sliding movement under the action of the vise screw threaded in the bearing at one end of the frame. The screws fastening the gib to the bottom of the movable jaw are accessible one at a time through a vertical hole provided in the frame intersecting the through-bore.

The invention is illustrated in the accompanying drawing, in which: 7

FIG. 1 is a perspectiveof the improved vise of my invention;

FIG. 2 is a longitudinal, section on a vertical plane through the center line of the frame; and

FIG. 3 is a cross-section on the line 3-3 of FIG. 2.

The same reference numerals are applied to corresponding parts throughout these views.

The body or frame 6 of the vise, it will be seen, is of one-piece massive metal construction providing the fixed generally rectangular jaw 7 at one end, and the fixed generally rectangular bearing or support 8 at the other end, in which a threaded hole 9 is povided horizontally for threaded reception of the horizontal vise screw 10, the end portions 7 and 8 being very rigidly interconnected by an especially thick and broad rectangular base portion 11 to eliminate any likelihood of distortion when the movable jaw 12 slidable on the base camps a piece of 3,486,746 Patented Dec. 30, 1969 work quite firmly between it and the fixed jaw 7. Great strength and rigidity is attributable to the fact that the base 11, besides being fairly massive, is not weakened by the usual wide T-slot commonly provided to receive the lower dove-tail portion on the movable jaw but instead has only a longitudinally extending relatively small size through-bore 13 driled therethrough on the longitudinal center line of the frame. This is for the purpose of defining a slot 14 of appreciably less width than the diameter of the'bore 13, through which the movable jaw 12 can be firmly connected by screws with the elongated cylindrical gib or key 15, having a close sliding fit in the bore 13 and having a flat top surface 16 milled 0E substantially flush with the flat top face 17 on which the movable jaw 12 is slidable with a close working fit. A vertical hole 18 is provided in the base 11 intersecting the bore 13 about midway between the ends 7 and 8 of the frame so that a screw driver can be entered from below the base to enter and tighten the screws 19 that serve to fasten the gib or key 15 to the bottom of the jaw 12.

Another feature is that of the keyhole slot 20 provided in the back of the jaw 12 through the large end of which the cylindrical head 21 provided on the inner end of the screw 10 can be entered prior to fastening the gib 15 to the bottom of the jaw 12, the reduced cylindrical neck portion 22 of this head end being, of course, then free to turn in the reduced end of the keyhole slot 20, whereby to move the jaw 12 back and forth as the screw 10 is turned in one direction or the other.

Wear plates 23 and 24 are provided on the fixed jaw 7 and movable jaw 12, respectively, as indicated in dotted lines in FIG. 2, and are fastenable in place by screws entered in the holes 25 provided in the jaws. The exposed faces of these wear plates may be suitably serrated for antislip engagement with the work or they may be specially profiled for special work.

Whenever the vise is reground on all of its worn surfaces it is a relatively simple matter to grind off on the top of the. gib 15 at 16 to the same extent tomake it substantially flush again with the new surface 17. There is sufficient clearance provided in the upper end of the keyhole slot 20 to allow for such regrinding as, of course, only a few thousandths of an inch will be taken off at a time.

In operation, the present vise, by virtue of the novel features disclosed, is stronger and more rigid and, therefore, not subject to distortion under heavy load, and retains its accuracy of operation much longer than vises of other constructions. It is, furthermore, easier to recondition this vise as all of the sufa'ces apt to require regrinding are so easily accessible.

It is believed the foregoing description conveys a good understanding of the objects and advantages of my invention. The appended claims have been drawn to cover all legitimate modifications and adaptations.

I claim:

1. A vise comprising a one-piece frame providing a base of elongated form with a fixed jaw at one end and a fixed bearing at the opposite end, both integral with the base, the frame having drilled therein a longitudinally extending cylindrical bore on the longitudinal center line of the base and parallel to the top thereof open at least at one end of the frame and open on top for only a fraction of the diameter of the bore to the top of said base between said fixed jaw and said fixed bearing, a slidable jaw movable on top of said base between the fixed jaw and the fixed bearing and having a flat bottom surface substantially flush with the open top of said bore, an elongated cylindrical gib slidable with a close working fit in said bore having a flat top surface longitudinally thereof substantially flush with the top surface of said base and disposed in abutment with the flat bottom surface of said slidable jaw to support said jaw with its bottom surface in working clearance relation to the top surface of said base, means securing said gib to said sliding jaw With their respective flat surfaces in abutment, and a screw 10 4 ing a hole provided in the base intersecting the bore through which the screw means is accessible for fastening purposes from below the base.

References Cited UNITED STATES PATENTS 758,035 4/1904 Beecher 81-179 X 985,682 2/1911 Landreth 269251 1,120,466 12/ 1914 Fegley 269251 FOREIGN PATENTS 268,643 12/ 1913 Germany.

15 ROBERT C. RIORDON, Primary Examiner L. GILDEN, Assistant Examiner 

